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esp32s2/hmac: Release HMAC lock in downstream mode incase of failure

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This commit is contained in:
Sachin Parekh
2021-09-06 11:21:39 +05:30
parent c215bb04f6
commit 94c9e5299a
1 changed files with 7 additions and 6 deletions
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13
components/esp32s2/esp_hmac.c
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@@ -55,7 +55,8 @@ esp_err_t esp_hmac_calculate(hmac_key_id_t key_id,
esp_err_t esp_hmac_jtag_enable(hmac_key_id_t key_id, const uint8_t *token) esp_err_t esp_hmac_jtag_enable(hmac_key_id_t key_id, const uint8_t *token)
{ {
esp_err_t err; int ets_status;
esp_err_t err = ESP_OK;
if ((!token) || (key_id >= HMAC_KEY_MAX)) if ((!token) || (key_id >= HMAC_KEY_MAX))
return ESP_ERR_INVALID_ARG; return ESP_ERR_INVALID_ARG;
@@ -77,10 +78,10 @@ esp_err_t esp_hmac_jtag_enable(hmac_key_id_t key_id, const uint8_t *token)
REG_WRITE(DPORT_JTAG_CTRL_0_REG + i, __builtin_bswap32(key_word)); REG_WRITE(DPORT_JTAG_CTRL_0_REG + i, __builtin_bswap32(key_word));
} }
err = ets_hmac_calculate_downstream(convert_key_type(key_id), ETS_EFUSE_KEY_PURPOSE_HMAC_DOWN_JTAG); ets_status = ets_hmac_calculate_downstream(convert_key_type(key_id), ETS_EFUSE_KEY_PURPOSE_HMAC_DOWN_JTAG);
if (err != ETS_OK) { if (ets_status != ETS_OK) {
ESP_LOGE(TAG, "HMAC downstream JTAG enable mode setting failed."); err = ESP_FAIL;
return ESP_FAIL; ESP_LOGE(TAG, "HMAC downstream JTAG enable mode setting failed. (%d)", err);
} }
ESP_LOGD(TAG, "HMAC computation in downstream mode is completed."); ESP_LOGD(TAG, "HMAC computation in downstream mode is completed.");
@@ -89,7 +90,7 @@ esp_err_t esp_hmac_jtag_enable(hmac_key_id_t key_id, const uint8_t *token)
esp_crypto_dma_lock_release(); esp_crypto_dma_lock_release();
return ESP_OK; return err;
} }
esp_err_t esp_hmac_jtag_disable() esp_err_t esp_hmac_jtag_disable()